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I find Taulman Nylon quite difficult to print on my Ultimaker... for a start the diameter tends to be a bit off, so that it often gets stuck in the Bowden. Secondly, the flexible, slippery texture of the surface seems to make it hard for the extruder bolt to grip effectively.

I've done some tests with PA6 Nylon, and that's a little easier to work with. More consistent diameter and plays nicer with the extruder drive, but needs very high temps - 265ºC or more. It'll stick pretty well to the unheated acrylic bed covered in gluestick, especially with lots of brim, but you'll probably want a heated bed for best results with any nylon, as it does tend to warp quite a lot.

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I've printed a fair bit of Taulman 618 Nylon on my Ultimaker. The biggest issue is warp. I've had no problems with extrusion or layer adhesion, but warping is a big problem. It sticks great to blue tape, but when it starts to warp it just peels the tape up with it and a heated bed makes no difference. The best thing I've found is to use a big brim and print onto a disposable piece of cardboard. You will destroy the cardboard trying to get it off and generally leave a layer of it left on your print, but it works. Even with this I still find my print warps a little bit though, it tends to bend the cardboard a little....

The parts don't look particularly attractive, but they are very strong and great for 'engineering' type tasks like pulleys, motor mounts, and brackets.

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If you're printing something small, you might get away with using paper tape (sand it first).

Another update...Finding that retraction helps, but it just doesn't work as well as with PLA.

So it's probably figuring out retraction settings to work with nylon. Currently it doesn't look like you can make the retraction go faster on the machine settings, but I suppose that might get fixed at some point.

I'm sure there are people who know how to work with extruded nylon...like from real industrial applications. Insight appreciated!